Shoe-nailing machine



- (No Model.) 5 Sheets-Sheet 1f 4 E. D. OHILDS.

SHOE NVAILING MACHINE,

No. 517,027. Patented Mar. 27, 1894.

I 5 SheetsSheet. 3.

(No Model.)

B. D. GHILDS;

- SHOE NAI-LI NG MACHINE.

No. 517,027. Patented Mar. 27, 1894.

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(No Model.) 5 Sheets-sum 4.

E. D. OHILDS.

SHOE NAILING MACHINE. No. 517,027. Patented Mar.27, 1894.

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(No Model.) 5 Sheets-Sheet 5; f

B. D. GHILDS. SHOE NAILING MACHINE.

No. 511,027. Patented Mar, 27, 1894.

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.UNITED STATES PATENT QFFIGE.

EDWARD D. OHILDS, 0F MILWAUKEE, WISCONSIN.

SFHOEA-NAILINGF MACHINE.

SPECIFICATION forming part of Letters Patent No. 517,027, dated March27, 1 894. Application filed May 24,1893. Serial No. 475,305. (Nomodel.)

To all whom it may concern..-

Be it known that I, EDWARD D. CHILDS, a citizen of the United States,and a resident of Milwaukee, in the county of Milwaukee, and in theState of Wisconsin, have invented certain new and useful Improvements inShoe- Nailin'g Machines; and I do hereby declare that the following is afull, clear, and exact description thereof.

My invention relates to new and useful improvements in shoe-nailingmachines, and consists in the matters hereinafter described and pointedout in the appended claims.

In the accompanying drawings illustrating my invention: Figure 1 is aside elevation of my improved machine. Fig. 2 is a central verticalsectional view of the same. Fig. 3 is an enlarged front elevation of apart of the wire feeding and cutting mechanism showing portions insection on line 3-3 of Fig. 7. Fig. 4. is a horizontal sectional viewtaken on line 44 of Fig. 3. Fig. 5 is a horizontal de tail sectionalview taken on line 5-5 of Fig. 7. Fig. 6 is a similar view taken on line6-6 of Fig. 7. Fig. 7 is a vertical sectional view of a portion of thewire feeding mechanism. Fig. 8 is a detail side elevation of one of thesupports for the wire feeding rolls. Fig. 9 is a detail sectional Viewof one of the wire cutting jaws taken on line 9-9 of Fig. 11. 'Fig. 10is a view partly in plan and partly in horizontal section, of thedevices for throwing the wire feeding mechanism into and out ofoperation. Fig. 11 is a front elevation showing parts broken away, ofthe wire cutting mechanism and the lever for actuating the same.

Fig. 12 is a vertical sectional view of the same taken on line 12-12 ofFig. 11. Fig. 13 is a detail cross sectional view of the mechanism forproducing a vertical reciprocation of the machine head. Fig. 14 is adetail view of the device for actuating the wire cutting jaws.

Fig. 15 is a partly broken plan View of the mechanism for feeding thework forward, and regulating the space between the nails. Fig. 16 is adetail view of a part thereof partly in section on the line 16-16 ofFig. 17. Fig. 17 is a vertical section on the line 17-17 of Fig. 15.Fig. 18 is a transverse section on the line 18-18 of Fig. v15.

Referring by letter to said drawings, A des-v i gn ates the mainstandard or post, upon which to the pulley O to drive the machine.

the operating mechanism is supported, B, the usual horn or anvil forsupporting the work, which horn is revolubly supported upon suitableforwardly extending brackets B E the latter of which is convenientlyprovided with an adjustable step b for the vertical shaft or spindle bof said horn.

0 represents the drive pulley which is j ournaled loosely upon the outerend of a stud shaft 0 extending horizontally from one side of thestandard A, and C a second wheel also looselyj ournaled upon said shaftand adapted to actuate the machine. A hand lever D is arranged upon oneside of the standard A and is secured at its lower end to a transverseshaft 01 provided with a rock-arm D which latter engages with an eye 03in the inner end of a rod d arranged to slide longitudinally in acentral bore in the stud shaft 0. The outer end of this rod is securedto a movable block d which engages at its outer end with a cap D uponthe outer end of the hub of pulley O, and at its inner end, engages withan annular interior flange in the end of said hub.

The drive pulley O has a beveled face 0' adapted .for engagement with asimilarly beveled face 0 upon the pulley 0', whereby when said faces arein engagement with each other, motion will be transmitted from thepulley 0 By a movement of the leverD in one direction, the rod at willbe thrust outwardly so as to crowd the drive pulley C away from thepulley C, a reverse motion of the lever obviously serving to press saidpulley against pulley O. In this manner, the drive wheel maybe throwninto or out of engagement with the pulley O which operates the belt todrive the moving parts of the machine, so as to start or stop themachine in an obvious manner.

A vertically disposed rod or bar E is pivotally engaged at its lowerend, as at c, with the inner end of a foot lever E which is pivoted tothe standard A, at e, and is provided with the usual foot piece e and atits upper end said rod or barE is provided with asuitable-step for arevoluble vertically disposed shaft F, as in Fig. 2 of the drawings.This shaft is screw-threaded for a portion of its length as at f, forengagement with a suitable -nut F, which rests upon a suitable supportwithin the standard A, and a spring f carrying a dog or pawl is arrangedat one side of said support so as to normally press said dog f intoengagement with the periphery of said nut, which is provided with aseries of teeth or serrations as shown more particularly in Fig. 13 ofthe drawings. A cam F is carried by the shaft F, above the nut F and isarranged to intermittently press the spring f outward to free the nutfrom engagement with the pawl or dog f and to permit said spring to dropback so as to bring said pawl into engagement with the toothed peripheryof the nut. The construction and arrangement of these parts aresubstantially the same as that described in the United States Patent No.479,784, granted to me on August 2, 1892, and the alternate engagementand disengagement of the nut by said pawl, serves to produce asuccession of up and down movements of said shaft F and the parts of themachine carried thereby. Upon the lower side of the machine head, Iprovide a suitable downwardly extending stud f for engagement with theend of the springf to disengage the pawl f when the machine head is atits lowest point and no work is in the machine, so as to prevent thehead from being lifted and permitted to drop or pound upon the standardas would be the case were the spring pawl to remain in engagement withthe nut.

Upon the upper end of the shaft F, is secured a gear G which meshes withand is actuated by a gear G upon the lower end of a vertical shaft 9journaled in the machine head and upon the upper end of which is secureda bevel pinion G meshing with a bevel gear G upon a horizontallydisposed shaft g also journaled in the head and carrying, at its otherend, a suitable worm wheel H actuated by a worm h upon a vertical shaftor spindle 1-1 which carries upon its upper end a suitable holder orreel h for wire, and is provided with a longitudinal bore 7L2 for thepassage of the wire to the feeding devices.

Upon the horizontal shaft g are arranged two cam wheels G and Grespectively, adapted for engagement with the feed actuating lever, andthe lever which actuates the wire cutting mechanism.

Upon the lower end of the shaft or spindle H is secured a carrier 11within which the rolls which grip and advance the wire, are supported.This carrier may be secured in any desired manner to the spindle H, butis conveniently detachably engaged with the lower end thereof in themanner shown in Fig. 3, of the drawings, in which said carrier is shownas provided with a screw-threaded socket engaging with thecorrespondingly threaded end of said spindle. A rotary head I is alsosecured to the said spindle and carries two gear wheels 1' t' which arefast upon the upper ends of revoluble shafts I 1 arranged to extenddownwardly through lateral bearing lugs t" t" on opposite sides of thecarrier H and provided at their lower ends with worms 1' i Transverselyarranged feed rollers J J, are journaled in the carrier H and havingprojecting spindles or axesjj carrying at their outer ends suitable wormwheels J J which are arranged to mesh with the worms 2' 2' on the shaftsI I. Asleeve K is arranged upon the outside of the spindle H and isprovided with a gear 7:; at its lower end, arranged to mesh with thegears 2' t' as shown more particularly in Fig. 4. Around the upper endof this sleeve is arranged a flexible strap L, which is secured at oneend to the machine head, as at Z and is arranged to engage at times withsaid sleeve in the manner to be presently described, to hold said sleevefrom rotation.

A rotary motion is imparted to the spindle or shaft ll by means of apulley H which is keyed, screwed, or otherwise secured to the upper endof said spindle and around which the usual drive belt is trained, saidbelt being trained over the pulley C and idlers (J C and by theengagement of the worm h with the wheel H on shaft g a continuousrotation is imparted to said shaft and the cams G G carried thereby, solong as the pulley H and spindle H continue to rotate. Pivoted upon abracket 17?. at the side of the machine head, is a lever M, provided atits upper end with a roller m arranged to rest against the face of thecam G as shown more particularly in Figs. 3 and 11, and this lever hasan operative connection with the free end of the friction band Lconsisting of rod m spring m and nut m so as to pull said end outwardlywhenever the upper end of the lever M is crowded outward by a rise inthe face of the cam G The friction band or strap L is arranged tonormally grip the upper end of the sleeve K by its own resiliency, andwhen free to so grip said sleeve, operates to hold the sleeve fromrotation, thus serving to hold the gear upon its lower end stationary.It follows from this construction, that when the said sleeve and gearare heldfrom rotation, the rotary movement of the spindle H with thehead I and the carrier l-l serves to carry the gears 2' t around thegear 70 so as to produce an independent rotation of said gearsz' t' upontheir own axes in an obvious manner, and this rotation of said gearsserves to actuate the worms 2' t and worm wheels J J to rotate the wirefeed rollers J J to advance the strand of wire engaged thereby, but whensaid friction band or strap is drawn open by the described outwardmovement of the lever M, said sleeve K and gear 71; will be free torotate with the spindle H as the head and gears thereon are carriedaround thereby, so that, at such times the feed rolls will be out ofoperation.

The cam G may be provided with any desired number of rises andintermediate depressions, and is of the same general construction shownin the prior patent previously mentioned, these alternate rises anddepressions being madetapering from front to back of the cam, and thecam operatively connected with a longitudinally movable sleeve 9 havingrack teeth for engagement with a revoluble pinion 9 having operativeconnection by means of a'crank g with a rod 9 secured to the top a ofcasting A at its lower end, and by this arrangement; the cam G isautomatically adjusted upon the shaft 9 by a change of elevation of thehead, so as to regulate the length of nails formed in the same manner asdescribed in my aforesaid prior patent.

If desired, a suitable spring L adjustable as to tension by a screw Lmay be arranged to engage with the arm L of the friction band L to pressthe free end thereof inward and cause the said band to more firmly gripthe sleeve K as desired. I also prefer to provide a rod N, revolublysupported in journals upon the side of the machine head, and providedwith an eccentric stud a arranged to engage with the free end of the armL as shown more particularly in Figs. 1 and 10, and further providedwith an operating lever handle 72. By a rotation of this rod N so as tobring the eccentric stud n outward, the arm L may be pressed outwardlyso as to free the sleeve K from engagement with the friction band L, andin this condition the said friction device and the feeding mechanismwill remain unaffected by the movements of the lever M, and consequentlythe feeding mechanism will be held from operation; When the said rod isturned back into the position shown in Fig. 10 of the drawings,

however, the arm L is free to spring in so as to cause the frictiondevice to come into op erative engagement with the upper end of thesleeve K, as before described.

The cutting mechanism for severing the Wire after it is inserted in thesole of the shoe, comprises a pair of jaws O 0 each provided with-acutting blade 0 and said jaws being pivoted, as shown at 0, to asuitable supporting stud. Each of these jaws is provided with anupwardly extending lever arm 0, and these arms are arranged to extendupwardly adjacent to each other as shown in Fig. 11,- and are providedin their upper ends with depressions o o for the reception of anelliptical or oval stud P on the end of the shaftp of a partiallytoothed gear or pinion P which is mounted in suitable bearings in thehead of the machine. A spring 0 is secured to the machine head by ascrew 0 as shown in Figs. 11 and 12, and is provided with downwardlyextending arms 0 0 having inner upward extensions 0 0 arranged to engagewith the upper ends of the arms 0 O to press them together against saidstud P. A lever Q is pivoted to the machine head as at q, and isprovided at its upper end with a roller q arranged to engage with thecam G and at its lower end has a segmentalgear g engaging. with thepinion P. The spring arms 0 O normally press the arms 0 O of the cuttingjaws together, thus keeping the cutting edges apart in an obviousmanner, but when the roller (1 on the upper end of lever Q is engaged bya rise in the face of cam G said lever will be rocked on its pivotalsupport q, so as to partially rotate the pinion P and the stud P tospread the arms 0 and cause the cutting edges of the jaws O O to engagewith the wire to sever the same.

As a further and separate improvement, I prefer to arrange the feedrollers J J so as to be adjustable to regulate their pressure upon thewire passing between them, and to this end, I journal said rollers inbearings r '1' in the lower ends of plates R R which are secured toopposite sides of the carrier H The upper ends of these plates arearranged to engage with the sides of the said carrier in the mannershown in Fig. 7 (at r r) of the drawings, and are provided with suitableap ertures through which adjusting screws R" R are passed and whichengage with threaded apertures in said carrier. said screws, the platesR B may be adjusted so as to press their lower ends inwardly to crowdthe rolls J J together upon the wire i an obvious manner.

A spring Q is secured to the machine head, and exerts its pressureagainst the described lever Q, as shown in Figs. 3 and 11, to keep saidlever against the cam G and aid in the rotation of the'pinion P.

The mechanism for feeding the workforward, and regulating the spacebetween the nails is best shown in the detail views, Figs.

15 to 18, inclusive.

As in my prior patent, hereinbefore referred to, the upper part of thestandard A consists of a hollow casting A having an up-' per horizontalextension 0,, for the support of the upper portion a of themachine-headraising-sleeve A (which sleeve is secured within the castingA by a feather, not shown, so as to freely reciprocate vertically, butbe incapable of any rotary movement).

The top of the head-raising-sleeve A is provided with a groove a ofcircular outline having a lateral continuation extending to one edge ofthe portion 0, as best shown in Figs. 15 and 17, and up through thecenter of the circular part of said groove the hereinbefore describedshaft F passes, and to this shaft, within said groove, is secured byakey f a horizontal cam-disk S, the top of which disk S is flush with thetop and extension 0. of the head-raising sleeve A and the under side ofwhich disk is provided with a cam-' groove 3. In the bottom of thegroove a there is cut an arc-shaped slot a for engagement with a pin tprojecting from the underside of the inner end of the feed-gage T whichrests in and projects out from the described lateral continuation of thegroove a. r This gage T isprovided with a "ertical longitudi- Bytightening nal slot 25 therethrough in about the center 3 of ,itslength, and beyond this with a longi-' tndinal recess 29, open to theouter end of said gage, to receive the adjustable feed-point U, whoseouter projecting end is provided with teeth a u, and one edge of whichis formed with rack-teeth, as shown at u, for regulat ing the degree ofprojection of said part U beyond the edge of the part T, by means of ithe lever V pivoted as shown at v to an extension i of the part '1, andhaving a sectorshaped head V provided with teeth 1; for engagement withsaid rack-teeth.

W is an arm provided with a longitudinal slot to through which it is adjustably secured to the under side of the extension a of headraisingsleeve A by a screw to said arm resting in a slot a to prevent lateralmovement, and having at its outer free end an upward projectingpivot-pin 10 for engagement within the described slot 15 of the gage T.

It follows, from the foregoing description of the construction of thegage and adjacent connecting mechanism, that the work placed upon theborn or anvil B is fed laterally by the movement of the described gage,as the cam-disk is actuated by the shaft F, and every time the headlifts in the manner already described, the work is fed so as to bring afresh point beneath the nailing mechanism, the distance between thenails being regulated by the adj ustmentof the arm W and its pivot w inor out from theinner end of the gage T, to vary the throw at the outerend of said gage, and the distance from the edge of the work to thenailing line being regulated by means of the projection of the part U,adjusted by the described lever V.

The operation of my improved machine is, in general, the same as thatdescribed in my said prior patent, with the exception of the describeddifferences in the operation of the wire feeding mechanism and thedevices for effecting an intermittent operation of the same, and thedescribed differences in the construction and operation of the wirecutting devices, and by the gage and work-feeding mechanism.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with the vertically movable head of a shoe-nailingmachine, of a vertically disposed revoluble shaft journaled in the head,suitable wire-feeding mechanism carried by said shaft, a gear foractuating the wire-feeding mechanism, a suitable friction device forholding said gear from rotation and suitable means actuated by thedriving mechanism for alternately throwing said friction device into andout of engagement with said gear, substantially as set forth.

2. In a shoe-nailing machine, the combination with the movable head, ofa horizontal shaft revolubly journaled therein and carry ing a cam, avertically disposed shaft also journaled in said head and carryingsuitable wire-feeding mechanism, a sleeve loose upon said vertical shaftand provided at its lower end with a gear for actuating saidwire-feeding mechanism, a friction device for engagement with saidsleeve, and a lever operatively engaged with said cam for alternatelymoving said friction device into and out of engagement with said sleeve,substantially as set forth.

3. In a shoe-nailing machine, the combination with the movable head, ofa horizontal shaft revolubly j ournaled therein and carrying a cam, avertically disposed shaft also journaled in said head and carryingsuitable wire-feeding mechanism, a sleeve loose upon said vertical shaftand provided at its lower end with a gear for actuating saidwire-feeding mechanism, a friction band arranged to embrace said sleeve,an arm operatively engaged with said band, and a pivoted lever havingoperative engagement with said arm and engaged at one end with said camto produce alternate inward and outward movements of said arm to causethe friction band to alternately grip and free said sleeve,substantially as set forth.

at. In a shoe-nailing machine, the combina tion with the movable head,of a horizontal shaft revolubly j ournaled therein and carrying a cam, avertically disposed shaft also journaled in said head and carryingsuitable wire-feeding mechanism, a sleeve loose upon said vertical shaftand provided at its lower end with a gear for actuating saidwire-feeding mechanism, a friction band arranged to embrace said sleeve,an arm operatively engaged with said band, a pivoted lever havingoperative engagement with said arm and engaged at one end with said camto produce alternate inward and outward movements of said arm to causethe friction band to alternately grip and free said sleeve, and suitablemeans under the control of the operator for securing said arm at thelimit of its outward movement, to permit the sleeve and its gear to runfreely within said friction band, substantially as set forth.

5. In a shoe-nailing machine, the combination with the machine head andwire-feeding mechanism carried thereby, of suitable jaws pivotallyengaged at their lower ends with the machine head and carrying cuttingedges arranged upon opposite sides of the path of the wire adjacent tothe pivotal point of said jaws, lever arms extending from the pivotalsupport of said jaws, a revolnble shaft, journaled in said head andprovided with an eccentric or elliptical stud extending between theupper ends of said lever arms, a pinion on said shaft, and a pivotedlever operatively engaged at one end with the operating mechanism, andcarrying at its other end a segmental gear meshing with said pinion,substantially as set forth.

6. In a shoe-nailing machine, the combination with a suitable supportfor the work, a vertically movable revoluble shaft, and amachine-head-raising sleeve vertically movable therewith, said sleevebeing provided w1th a groove in its top surface, of a camdisk fast onsaid shaft and located in said groove and provided with a cam-groove inone of its faces, and a feed-gage also located in, and projecting from,said sleeve-groove, and in operative engagement with said camgroove, andwith an adjustable pivot, for feeding the work forward, and regulatingthe distance between the nails, substantially as set forth.

7. In a shoe-nailing machine, the combination with a suitable supportfor the work, a vertically movable revoluble shaft, and amaehine-head-raising sleeve vertically movable therewith, said sleevebeing provided with a groove in its top surface, of a camdisk fast onsaid shaft and located in said Witnesses:

H. G. UNDERWOOD, C. A. Soorr.

